Flexible Packaging
Mostrando 13-19 de 19 artigos, teses e dissertações.
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13. Adesivos poliuretanicos derivados de PET reciclado : sintese, caracterização e aplicação
In Brazil, the production and recycling index of poly(ethylene terephthalate) -PET have been increased. Therefore it is necessary to increase the possibilities for utilizing this polymer waste. This work aims the chemical recycling as a way to obtain value added products from PET waste. Postconsumer PET bottles were first depolymerized by glycolysis with die
Publicado em: 2004
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14. Evaluation of mathematical models to estimate the stability of corn flakes in flexible packaging / Avaliação de modelos matematicos na estimativa da estabilidade de flocos de milho em embalagens flexiveis
Este estudo avaliou a utilização de três modelos matemáticos (Linear, Ponto Médio e Intervalo Logaritmo) para estimar a vida útil durante a estocagem de flocos de milho em embalagens plásticas flexíveis. Para verificar a adequação dos modelos matemáticos, foram realizados alguns experimentos reais com o produto como subsidio para as devidas compar
Publicado em: 2003
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15. The pCL vector system: rapid production of helper-free, high-titer, recombinant retroviruses.
We describe the construction and characterization of retroviral vectors and packaging plasmids that produce helper-free retrovirus with titers of 1 X 10(6) to 5 X 10(6) within 48 h. These vectors contain the immediate early region of the human cytomegalovirus enhancer-promoter fused to the Moloney murine leukemia virus long terminal repeat at the TATA box in
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16. Influenza B viruses with site-specific mutations introduced into the HA gene.
We have succeeded in engineering changes into the genome of influenza B virus. First, model RNAs containing the chloramphenicol acetyltransferase gene flanked by the noncoding sequences of the HA or NS genes of influenza B virus were transfected into cells which were previously infected with an influenza B helper virus. Like those of the influenza A viruses,
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17. DNA sequence-dependent deformability deduced from protein–DNA crystal complexes
The deformability of double helical DNA is critical for its packaging in the cell, recognition by other molecules, and transient opening during biochemically important processes. Here, a complete set of sequence-dependent empirical energy functions suitable for describing such behavior is extracted from the fluctuations and correlations of structural paramet
The National Academy of Sciences.
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18. Large-amplitude picosecond anisotropy decay of the intrinsic fluorescence of double-stranded DNA.
The conformational flexibility of the DNA double helix is of great interest because of its potential role in protein recognition, packaging into chromosomes, formation of photodefects, and interaction with drugs. Theory finds that DNA is very flexible; however, there is a scarcity of experimental results that examine intrinsic properties of the DNA bases for
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19. Multiple RNA binding domains (RBDs) just don't add up.
One of the most common motifs for binding RNA in eukaryotes is the RNA binding domain (RBD) or RNA Recognition Motif (RRM). One of the more intriguing aspects of these proteins is their modular nature. Proteins have been found containing from one to four RRMs. In most instances, these domains have some basal level of non-sequence specific RNA binding affinit